Control mechanism for power-hoists.



S. SHMMEL CONTROL MECHANISM FOR FOWER HOISTS.

APPLICATION mm OCT. 21. me.

PatentedNov. 6, 191?.

3 SHEETSSHEET I.

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b Jvwanfoz S. STIMMEL. CONTROL MECHANISM FOR POWER HOISTS.

APPLICATION FILED OCLZI. 191s.

Patented Nov. 6, 1917.

3 $HEETSSHEET 2.

Hill S. STIMMEL. CONTROL MECHANISM FOR POWER HOISTS.

APPLICATION FILED OCT. 21.1916. 1,245,522. Patented Nov. 6, 1917.

3 SHEETS-SHEET 3- nvawtoz JEmual Jfz'anme/ 351 fitter SAMUEL STIMYMEL, OF NEW YORK, N. Y, Q

CONTROL nncnnmsin FOR POWER-HOISTS.

Specification of Letters Patent.

Patented Nov. 6, 1917.

Application fiied October 21, 1916. Serial No. 126,835.

To all whom it may concern: 7

Be it known that I, SAMUEL STIMMEL, a citizen of the United States of America, residing at New York city, county and State of New York, have invented certain new and useful Improvements in Control Mechanism for Power-Hoists, of which the following is a full, clear, and exact description.

This invention relates to improvements in power-hoists, the object being to provide a mechanism of this nature which is particularly well adapted for application to a combined motor-truck and trailer to raise or tilt the body of the trailer. Myimproved power-hoist is arranged for operation by the motor of the truck, special means being provided to disconnect the hoist from the driving-shaft of the truck when the body of the trailer has been raised a predetermined distance.

One of the features of my invention is a specially arranged mechanism whereby the automatic throwout mechanism can be disconnected from the hoist to permit said tion in detail, the essential features of which will be summarized in the appended claims, reference being had to the accompanying drawings, forming part hereof; wherein Figure 1 is an enlarged plan view of my improved hoisting device, a portion of the truck-frame and driving shaft being also shown; i 7

F1 2 is an enlarged sectional detail view,

the section being taken on a line 2-2 in Fig. 1;

Fig. 3 is a similar view, the section being taken on a line 33 in Fig. 1'; v

Fig. 1 is an enlarged sectional detail view, the section being taken on a line 1 1 in Fig. 6 is a sectional view, the section being taken on a line 6-6 in Fig. 5, certain parts being illustrated in elevation;

Fig. 7 is an enlarged sectional detail view showing the jack-shaft which carries the sliding 'gearsfor operating the hoist; a portion of the engine-shaft, which carries-f the driving gear for the hoist, being also shown;

Fig. 8 isa cross-sectional view thereof,

the section being taken on a line 8-8 in Fig. 7;

ig. 9 is a sectional plan view of the mechanism illustrated in Fig. 7, the section being taken on a line 99 in Fig. 7; and

Fig. 10 is a diagrammaticside view ofa 'motor-truck' and trailer having my improved hoist applied thereto.

, Referring to Fig. 10, a motor-truck is indicated by A and its trailer by B, said trailer. including a body C carried by a framework D having wheels E (one only being shown). As herein illustrated, the bodyO is hinged'to the framework D at 11' and is arranged to be tilted upwardly, at the forward end thereof, by a lever 12 pivoted at 13 to the framework DJ One end of the lever 12 carries a roller 14 which bears against theunder surface of thebottom of the body C. The opposite end of the lever 12 is connected by a cable 'or' chain, indicated by 15, to the hoisting device F. When the lever 12 is operated, the body C will be "tilted up at its forward end and dump the load carried thereby. The means herein shown for elevating or tilting the body C, 'is an arbitrary arrangement selected for illustration only.

. My improved hoisting device F is mounted on the frame 16 of the truck and is operated when required by the driving-shaft 17, to which I secure a driving pinion 18.

Adjacent the driving-shaft 17', I mount a jack-shaft 19 (see Fig. 7), said jack-shaft being supported by brackets 20 which depend from a bed-plate 21 secured to the frame of the truck! At one end the shaft 19 is provided with a sprocket-wheel 22 ,be' engaged by the chain 28.

which, by means'of'a' chain 23 1), 'op- Upon the shaft 19, I slidably mount a' sleeve 26 which is rotatably connected to the'shaft 19 by a feather or spline 27. T0

. the sleeve 26, I secure gears 28 and 29 ;the gear 28, when meshed with the gear-18,-will 4 which carries the drum 47.

operate the hoisting device to wind up the cable 15. The gear-29 cooperates-with an intermediate gear 30 to reverse the motion or movement of the hoisting-drum.

The intermediate gear 30 is carried by a bracket 31 extending from a housing 32 through which the sleeve 26 loosely passes, that is to say, the sleeve 26 rotates within the housing 32.

To prevent the housing 32' from rotating with the sleeve 26, I. provide same with an arm 33 having a bearing 34 which slidably engages a rod 35 carried by'arms 36- and-'37 which extend from the bearings 20.

To shift the sleeve 26, to c ause either the gear 28 or gear 30 tomesh with the gear or pinion 18, I provide the housing 32'with.;a post 38 carrying a pin 39engaging the; slot 40 in the'arm 41 of a. gear shifting mecha nism.

To cause the hoist to wind up the cable 15, the sleeve 26 will be moved to cause; gears 18 and 28 to mesh. To cause thehoist to unwind the cable 15, the housing 32 will be moved to cause the gears 1 8 a nd 30 to mesh. )Vhen the arm 41 of the shifting device is in a vertical position, the transmission gears 28, 29 and'3O will'be in neutral position. At such a time the gear 18 will be positioned between the gears 28 and .30 f l11d out of mesh with both; hencetomesh the gears and 28 the sleeve 26 will be moved toward the right in Fig. 10, and tocause the; gears 18 and 30 to mesh the sleeve 26 will'be moved toward the left I v Y The gear shifting device consists of a; shaft 42, which carries the arm;4l, the shaft-42 being mounted in bearings43 and 44 (Fig. One end of the shaft 42 carriesarms 44 and 45, the arm 44 being used to shift the sleeve 26 manually, the arm 45 being connected by a link 46 to an automatic device to move the sleeve 26 to neutral position at the end of a substantially complete revolution of the drumof the hoisting device The operation of the hoisting-device" either forward or backward is instituted byoperat- 'ing the sleeve 26 to the lighter left by mcans of the arm 44 and other elementsof jter-shaft 24, gear 48 or 49,.gear 5O or 51,

shaft 52, which carries'the.gears 5Q and 51, worm 53, on shaft 52, worm-gear 54, meslr ing with the worm 53, and'spuregears 55 and 56. The gear 55 is mounted on thesha ft 57 which carries the worm-gear 54 and ithe spur-gear 56 is mounted on the'shaft 58, The worm 53 and'v'orm-gear 54 are incased in a housing 's'p egbecsus the'gear '48 is snialler than the.

.gear 50. WVhen" the sleeve 60is movedto caus e"the"gears 49a'rid' 51tomesh, the drum 47 will rotate at a"higher"sp'eed, because the gears 49 arid 51 are thesamesi'ze. Ifd'esin able, the .rotationof the drum can be'conf for" the reason" thatthe gears 48 i and; '50 or {gears and 5l'canbeinieshcd or disengaged by shifting the sleeve"60. *When this occurs, ,the drivingj'gear' 18 can be left in "mesh with -the ge ar" 28j or""gear 30,f as "the case may be. "lUnder ord'in'ary con ditionsWhe gears 48 and50 willibe meshed, the" throwing out '01)- stanza teetering at thefj ack-fsha'ft 19.

'To 'aut m'atiedn c'liseennect the hoist fro m 'the' driving "mechanism, or "shaft-17, and itsgear l8, I'providea' cam disk66 jhavin i acam,teator'p'roj'ection 67" (see Fig. 5) arranged"tostrike'aroller68 carried -by an aimtafp'ivoted at 70w afbrac'ket 71 en the bed plate 2l. The ie er'eind of thear'm "Orie'v'er tetarriesartner 72'vvhi'ch engages a-jaw 7 3 in a slide 74 carried by a guide 75 onthe bed-platef2l, At "aboutthe end of bne'ievoliit'ion inf ei'thjr direction, the teat 675vil1striketh roller-J68 an dfinove the'a'rm to shi ft'the'sleeve'26 to the neutralposition, at'whiclftime the drum 47 wilhc'ease rotatinlg. For example, "if the' sleeve 26 'is'movcd to the right' (Fig. 10)'to*qm1sethe gears 18 and 28 to rnesh, the rollef68 on the; arm 69 "('Fig.- ,5) willbeinovedftoward the left. At about the time thediisk66l'ias completed one revolution, the teat "will strike the said rollerand 'inove ittowardf'the right until the gear2 81eaves 'the"'gear 18,at which time l the" drum will stop the'jsaine'i action *occurs "during" a" reverse" movement. v

Un d er normal conditions the disk f66 will rotatew-ith. the drum 47, but said [disk "is ice permanentl secured m the 58. To cause -thedi'sk 66 to'rotate'with the [shaft 58 or to be disconnected therefrom, leprovide a" cliitch cone 76; to engage a cup 77 on the disk 66 (Fig.3), the cone 76 *bein slid- D :ahle' pon 'biit 'r'ota tably connected to the shaft 5853 a feather'or spline 78. Toshi'ft the cone 76,1 provide a shifting-"lever 79 pivoted at80 to' a'block 81 onTthebed-plate 21. A spring sa keepsthejcone 76 and cup 77 in engagement. Should I desire'to have the'drnm'operate continuously for a space oftiine,Iwould operate the lever 7 9 and disconnect the disk 66 from the shaft 58, at which time the automatic throwing-out mechanism would not operate; but as soon as the cone and cup become again engaged, the throw-out mechanism will operate after the teat 67 had sufficiently moved the lever 69. By this means the operation'of the hoist is not limited to one revolution. For trailer hoistin purposes, one revolution would probably be sufficient, but should I need a little more, I would simply release the clutch, then cause it to again engage the disk; in-

the meantime, the drum 47 will have gained a little in rotation. In other words, the operation of the automatic release can be delayed by operating the clutch releasing mechanism.

lVh-at I claim as my invention is:

1. In a power-hoist, a drum, a shaft for said drum, means to operate same, a camdisk carried by said shaft, a cam or teat carried thereby, a slide operable by said cam or teat and means carried by the slide to disconnect the operating means after said drum has been operated to a predetermined extent.

2. In combination with the driving shaft of a motor vehicle, a gear carried thereby, a jack-shaft adjacent thereto, gears slidably mounted upon said jack-shaft but rotatably connected thereto, a hoisting drum, operating means connecting the said jack-shaft and said drum, a cam-disk operable with said drum, and means operable by said camdisk to operate the shifting means for the gears on said jack-shaft.

3. In combination with the driving shaft of a motor vehicle, a gear carried thereby, a j ack-shaft adjacent thereto, gears slidably mounted upon said j ack-shaft but rotatably connected thereto, a hoisting drum, operating means connecting the said jack-shaft and said drum, a cam-disk operable with said drum, means operable by said cam disk to operate the shifting means for the gears on said j ack-shaft, and means to delay the operation of said shifting mechanism by said cam-disk.

i. In combination with the driving shaft of a motor vehicle, a gear carried thereby, a jack-shaft adjacent thereto, gears slidably mounted upon said j ack-shaft but rotatably connected thereto, a drum, a shaft therefor, operating means connecting the jack-shaft and the shaft of said drum, a cam-disk loosely mounted on said shaft, a cam carried thereby, a releasable clutch connecting said shaft and said cam-disk, and means operable by the cam on said disk to shift the gears on said jack-shaft.

The combination of a driving shaft, a gear carried thereby, shiftable gears rotatably mounted adjacent the gear first named and arranged to mesh therewith, a jackconnecting said counter-shaft and jack-'- shaft.

6; The combination ofa power shaft, a hoisting drum, a worm-gear to rotate same, a worm meshing with said worm-gear, a shaft for said worm-gear, a plurality of spur gears of different diameters carried by said shaft, a counter-shaft adjacent thereto, a plurality of gears of different diameters slidably mounted on said counter-shaft, means to shift said slidable gears to cause any one of the gears on the counter-shaft to mesh with a corresponding gear on the worm-shaft, and means connecting said counter-shaft and power-shaft.

7. The combination of a driving shaft, a gear carried thereby, shiftable gears rotatably mounted adjacent the gear first named and arranged to mesh therewith, a jackshaft for said gears, means to shift said gears, a hoisting drum, a worm-gear to rotate same, a worm in mesh with said wormgear, a shaft for said worm-gear, spur gears carried by said shaft, a counter-shaft adjacent thereto, gears slidably mounted on said counter-shaft arranged for rotation therewith, means to shift said gears to cause any two of the said gears to mesh, means connecting said counter-shaft and jack-shaft, and means controlled by the rotation of said drum to automatically shift the gears on the j ack-shaft.

8. The combination of a driving shaft, a gear carried thereby, shiftable gears rotatably mounted adjacent the gear first named and arranged to mesh therewith, a jackshaft for said gears, means to shift said gears, a hoisting drum, a worm-gear to rotate same, a worm in mesh with said wormgear, a shaft for said worm-gear, spur gears carried by said shaft, a counter-shaft adjacent thereto, gears slidably mounted on said counter-shaft arranged for rotation therewith, means to shift said gears to cause any two of the said gears to mesh, means con necting said counter-shaft and ack-shaft, a cam-disk rotatable with said drum, a cam carried thereby, and means operable by the cam on said disk to shift the gears on said jack-shaft.

9. The combination of a driving shaft, a gear carried thereby, shiftable gears rotatably mounted adjacent the gear first named and arranged to mesh therewith, a jackshaft for said gears, means to shift said gears, a hoisting drum, a Worm-gear to rotate same, a Worm in mesh With said Wormgear, a shaft for said Worm-gear, spur gears carried by said shaft, a counter-shaft adjacent thereto, gears slidably mounted on said counter-shaft arranged; for rotation therewith, means to shiftsaid gears to cause any tWo of the said gears to mesh means connecting said counter-shaft and jackshaft, a cam disk rotatable With said drum,

10 a cam carried thereby, a lever arranged to SAMUEL STIMMEL.

Witnesses d I EDUARDA. JARVIS, MAURICE BLOCK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

1 Washington, D. G. 

